1000221212211 has 16 divisors (see below), whose sum is σ = 1438961212416. Its totient is φ = 614343829536.

The previous prime is 1000221212171. The next prime is 1000221212231. The reversal of 1000221212211 is 1122121220001.

It is not a de Polignac number, because 1000221212211 - 2¹⁸ = 1000220950067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1000221212231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24498435 + ... + 24539228.

It is an arithmetic number, because the mean of its divisors is an integer number (89935075776).

Almost surely, 2^{1000221212211} is an apocalyptic number.

1000221212211 is a deficient number, since it is larger than the sum of its proper divisors (438740000205).

1000221212211 is a wasteful number, since it uses less digits than its factorization.

1000221212211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49038202.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1000221212211 its reverse (1122121220001), we get a palindrome (2122342432212).

The spelling of 1000221212211 in words is "one trillion, two hundred twenty-one million, two hundred twelve thousand, two hundred eleven".